Scroll the bar to the part of the tutorial you need.
Troubleshooting Tip:
If the flash tutorial does not fully load and stops mid-way, check the sliding bar above. If it is only partially black, you can RELOAD the page and more of the tutorial will load. Another option is to go to your desktop, right mouse click, select Properties..Setting...Advanced..Troubleshoot..see if Hardware acceleration is moved to NONE.